基于次声波传导特性的城市供水管网漏损区判定的研究

发布时间：2018-05-11 00:08

本文选题：城市管网 + 漏损检测　；参考：《太原理工大学》2013年硕士论文

【摘要】：水是人类的生命之源,城市供水管网运输在我们的社会中起到了至关重要的作用,但因其庞大性,和影响因素的不确定性,漏损现象经常都会发生,所以迅速的确定漏损位置并且能够及时的进行修护是十分重要的。随着社会的巨大进步,造成管网漏损的因素也越来越多,同时人们对水的依赖性也越来越大,因此供水管网漏损区的快速判定已经成为当今社会的重中之重。虽然现阶段有许多关于应用声波来检测管网漏损点的仪器和方法,但因其自身的原因,都存在不足之处,不能实时的、准确的、有效的检测到城市供水管网漏损点的位置,本文基于对过去关于声波对管网漏损的相关资料的研究,终于得到了一种相对更加完善的城市供水管网漏损判定点的泄漏检测系统,主要情况如下：首先主要介绍了当今城市供水管网漏损监测的背景以及其重要性和对其管道泄漏方式的阐述,以及对其各种实时检测定位的基本原理进行了仔细的分析,着重讨论了城市供水管网中的波速公式的问题。其次通过对城市供水管网实时检测的基本定位的原理分析,得到关于城市管网漏损定位的两种算法(一种是相关分析算法,另一种是迭代算法),紧接着重点阐述了小波分析算法在城市供水管网实时定位监测中的应用,通过仿真的检测办法,进而来判断三种定位算法对城市供水管网漏损区判定的效果。再次,根据城市供水管网的特殊性和复杂性,搭建了城市供水管网的检测平台。供水管网检测系统通过在其加入辅助传感器的方式,从而提高了管网中的声波信号的精确性,从而提高其检测的准确性和及时性,并且将其得到的计时数据通过GPS时序模块进行传输以及进行时间的校正。最后将对其整个城市环状供水管网进行模拟仿真。通过对其在MATLAB软件平台上的ANSYS软件模拟原始管道信号的算法,仿真的结果证明了该系统方案在城市环状供水管网漏损点的检测的时效性和准确性都有了明显的提高。
[Abstract]:Water is the source of human life. The transportation of urban water supply pipe network plays a vital role in our society. But because of its huge and uncertain factors, leakage often happens. So it is very important to quickly determine the leakage position and be able to repair in time. With the great progress of the society, There are more and more factors causing the leakage of the pipe network, and the dependence of water on the water is becoming more and more large, so the rapid determination of the leakage area of the water supply network has become the most important of the society. Although there are many instruments and methods about the application of sound wave to detect the leakage point of the pipe network at the present stage, there are some shortcomings due to its own reasons. The location of the leakage point of the urban water supply network can not be detected in real time, accurately and effectively. Based on the past research on the related data of the leakage of the sound wave to the pipe network in the past, a relatively more perfect leak detection system for the leakage judgment point of the urban water supply network is finally obtained. The main situation is as follows: first of all, it is introduced. The background of leakage monitoring in urban water supply network, its importance and its leakage mode, and the basic principles of its real-time detection and positioning are carefully analyzed. The problem of the wave velocity formula in the urban water supply network is emphatically discussed. Secondly, the basic positioning of the real time detection of urban water supply pipe network is made. According to the principle analysis, two algorithms about the leakage location of urban pipe network (one is correlation analysis algorithm and the other one is iterative algorithm), the application of wavelet analysis algorithm in the real-time location monitoring of urban water supply network is emphasized, and the three location algorithms are judged by the simulation test method. Thirdly, according to the particularity and complexity of the urban water supply network, the detection platform of the urban water supply network is set up. The detection system of the water supply pipe network can improve the accuracy and timeliness of the sound wave signal in the pipe network by adding the auxiliary sensor in the way, and will improve the accuracy and timeliness of the detection. The time data is transmitted through the GPS sequence module and the time correction is carried out. Finally, the whole urban circular water supply network is simulated. The algorithm of the original pipeline signal is simulated by the ANSYS software on the MATLAB software platform. The simulation results show that the system scheme is in the urban circular water supply network. The timeliness and accuracy of leak detection have been significantly improved.

【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU991.38

【参考文献】